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Mass Transfer

Mass Transfer
The film penetration model of mass transfer was enunciated by

Gilliland
Fick
Toor and Marchello
Stefan

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

1
> 1
< 1
≤ 1

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Mass Transfer
Prandtl number for water at 20°C is about

0.7
70
150
7

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Allowable gas velocity
Allowable liquid velocity
Feed composition
Allowable gas and liquid velocities

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Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

Temperature
Nature of the solid
Nature of the moisture
All of these

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB0.5, according to __________ theory.

Film
Surface renewal
Penetration
None of these

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